CN114460461A - UUV propulsion system reliability pressure kettle test system and method - Google Patents

Abstract

The invention relates to the technical field of electromechanics, and discloses a system and a method for testing the reliability of a UUV propulsion system by using a pressure kettle, wherein the system comprises a power supply, an upper computer, a main control board, a first watertight socket, a junction box, a watertight cable, an installation base and a pressure kettle; a propulsion system to be tested and a junction box are arranged in the pressure kettle, and the propulsion system to be tested and the junction box are connected through a watertight cable; a watertight plug is correspondingly arranged in a wire outlet hole reserved in a bulkhead of the pressure kettle, and a first watertight socket connected with the junction box is arranged on the watertight plug; the main control board receives a control instruction of the upper computer, sends the control instruction to the propulsion system to be tested, receives the feedback operation data and the fault signal, stores the operation data and the fault signal, outputs the operation data and the fault signal to the upper computer, converts the water leakage fault signal, and gives an alarm prompt after the water leakage fault is determined. The method can greatly verify the reliability of the UUV propulsion system and avoid the existing risks, and has an important effect on improving the safety and reliability of the UUV propulsion system.

Description

UUV propulsion system reliability pressure kettle test system and method

Technical Field

The invention relates to the technical field of electromechanics, in particular to a system and a method for testing reliability of a UUV propulsion system by using a pressure kettle.

Background

The UUV propulsion system is the key for the normal operation of the whole UUV (unmanned underwater vehicle), and generally comprises a watertight motor, a controller, a propeller, a guide pipe and the like. Before the UUV is tested underwater, the running performance of the propulsion system is generally checked only by the watertight motor and the controller. In the air or in the water tank, the running performance of the watertight motor under the conditions of no load and loading is checked, the loading (torque loading) generally adopts a mode of opposite dragging, the torque under the condition is an ideal torque which is given artificially, and the torque is different from the torque of the watertight motor with a propeller when the watertight motor runs underwater along with a UUV (unmanned underwater vehicle).

1. Due to the fact that certain deviation may exist in propeller machining, under the same rotating speed, the power in theoretical design and the power in actual operation have large difference, and therefore certain difficulty is caused in setting of protection values such as a controller program current threshold value.

When the UUV operates underwater, the watertight motor needs to be started frequently under certain working conditions, and due to the influence of water flow, the load fluctuation of the watertight motor is large, so that the operation performance of the watertight motor without a position control mode is greatly influenced.

3. In deep water, the water pressure born by the dynamic seal of the watertight motor is increased, so that the compression amount of the O-shaped ring of the dynamic seal is increased, the friction force between the O-shaped ring and the shaft is increased, the torque of the watertight motor is increased at the same rotating speed, and the running performance of the low-power watertight motor is greatly influenced.

4. Under different water pressures, because the material selection is improper, the watertight motor leaks because the dynamic seal deformation that causes is caused to big water pressure's influence when the deep water to seriously influence UUV operation's security and reliability.

When the watertight motor is tested in the air or a common water tank in a split mode, the four existing risks cannot be tested and verified.

Disclosure of Invention

The invention aims to provide a system and a method for testing the reliability of a UUV propulsion system by using a pressure kettle, aiming at solving the technical problems in the prior art, and the system and the method can be used for verifying the reliability of the UUV propulsion system and avoiding the existing risks, and are simple in structure, reliable in function and easy to realize.

In order to solve the problems proposed above, the technical scheme adopted by the invention is as follows:

the invention provides a pressure kettle test system for reliability of a UUV propulsion system, which comprises a power supply, an upper computer, a main control board, a first watertight socket, a junction box, a watertight cable, a mounting base and a pressure kettle, wherein the upper computer is connected with the main control board;

a mounting base is arranged in the pressure kettle, a propulsion system to be tested and a junction box are arranged on the mounting base, and the propulsion system to be tested and the junction box are connected through watertight cables; a watertight plug is correspondingly arranged in a wire outlet hole reserved in the bulkhead of the pressure kettle, and a first watertight socket connected with the junction box is arranged on the watertight plug; the power supply, the main control board and the upper computer are positioned outside the pressure kettle;

the power supply provides power for the propulsion system to be tested; the upper computer sends a control instruction to the main control board; the main control board receives the control instruction and sends the control instruction to the propulsion system to be tested; the main control board also receives operation data and fault signals fed back by the propulsion system to be tested, stores the operation data and the fault signals and outputs the operation data and the fault signals to the upper computer, converts water leakage fault signals in the water leakage fault signals, and gives an alarm prompt after the water leakage fault is determined.

Furthermore, the main control board comprises a central processing unit, a first communication module, a second communication module, a conversion module, an alarm module and a data storage module; the second communication module receives a control instruction of the upper computer and outputs the control instruction to the central processing unit;

the central processing unit outputs the control instruction to the propulsion system to be tested through the first communication module and receives operation data fed back by the propulsion system to be tested; the operating data is output to a data storage module for storage and uploaded to an upper computer;

the conversion module receives a water leakage fault signal output by the propulsion system to be tested, and converts and outputs the water leakage fault signal to the central processing unit; the central processing unit outputs an alarm signal to the alarm module for alarm prompt when determining that the water leakage fault occurs according to the received signal

Furthermore, the central processing unit receives other fault conditions output by the propulsion system to be tested through the first communication module, feeds the other fault conditions back to the upper computer through the second communication module, and displays and monitors the fault conditions through the upper computer.

Furthermore, the power supply adopts a direct current stabilized power supply and is connected to the first watertight socket through a direct current bus; the upper computer adopts a computer controlled by a computer and is connected with the main control panel through a communication box; the main control board is also connected to the first watertight socket through weak current scattering wires.

Furthermore, the junction box is of a watertight structure, second watertight sockets are mounted at two ends of the junction box, and the second watertight sockets are connected with the propulsion system to be tested and the first watertight socket through watertight cables respectively.

Further, the propulsion system to be tested and the junction box are arranged on the mounting base through fixing tools.

The invention also provides a UUV propulsion system reliability pressure kettle test method, which comprises the following steps:

carrying out airtight inspection on the propulsion system to be tested and the junction box, and placing the propulsion system to be tested and the junction box into a pressure kettle for fixing;

respectively electrically connecting the propulsion system to be tested, the junction box and the junction box with a direct-current stabilized voltage power supply, a main control board and an industrial control computer;

after the system is powered on, the function of the propulsion system to be tested is checked, and after the industrial control computer determines that the function of the propulsion system to be tested is normal according to the received operation data, the power is cut off and the pressure kettle is closed;

and (3) filling water into the pressure kettle, electrifying and applying different water pressures to the pressure kettle according to different working conditions, and controlling the running state of the propulsion system to be tested by the industrial control computer to test the reliability of the propulsion system to be tested.

Further, the industrial control computer controls the running state of the propulsion system to be tested, and performs reliability test on the propulsion system to be tested, and the method specifically includes:

and controlling the propulsion system to be tested to run at different given rotating speeds, monitoring through the industrial control computer and the direct current stabilized voltage power supply, and judging the propulsion system to be tested to be reliable if the propulsion system to be tested normally runs at the given rotating speed.

Further, the industrial control computer controls the running state of the propulsion system to be tested, and performs reliability test on the propulsion system to be tested, and the method specifically includes the following steps:

switching the rotating speed of the propulsion system to be tested under different water pressures, if the voltage and the current of the direct current bus are monitored to have no violent fluctuation, the response time of the propulsion system to be tested meets the requirement, the propulsion system to be tested normally and stably operates according to the switched rotating speed, and the main control board does not prompt an alarm and the industrial control computer does not receive fault feedback, so that the operation performance of the propulsion system to be tested is considered to be reliable;

and under different water pressures, controlling the propulsion system to be tested to be continuously started and stopped, and if the response time of the propulsion system to be tested meets the requirement and finally the propulsion system to be tested normally and stably operates at a given rotating speed, determining that the running performance of the propulsion system to be tested is reliable.

Further, the industrial control computer controls the running state of the propulsion system to be tested, and performs reliability test on the propulsion system to be tested, and the method specifically includes the following steps:

and controlling the propulsion system to be tested to operate at a low rotating speed, gradually and slowly increasing the water pressure in the pressure kettle, monitoring water leakage alarm feedback by the industrial control computer, and if the propulsion system to be tested operates normally and the main control board does not prompt water leakage alarm, determining that the sealing performance of the propulsion system to be tested is reliable.

Compared with the prior art, the invention has the beneficial effects that:

the method and the device have the advantages that the propulsion system to be tested is placed in the pressure kettle for operation performance examination, so that the performance examination of the watertight motor is closer to the actual underwater operation condition, the reliability of the UUV propulsion system can be greatly verified, the existing risks can be avoided, the blank of the current UUV propulsion system for simulating the underwater reliability test is filled, the method and the device have an important effect on improving the safety and the reliability of the UUV propulsion system, and important references are provided for the design, the manufacture and the optimization performance of the UUV watertight motor.

Drawings

In order to illustrate the solution of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort. Wherein:

FIG. 1 is a schematic diagram of a UUV propulsion system reliability autoclave test system of the present invention.

Fig. 2 is a schematic diagram of a main control board according to the present invention.

FIG. 3 is a flow chart of the UUV propulsion system reliability autoclave test method of the present invention.

The reference numerals are explained below: the system comprises a 1-direct current stabilized power supply, a 2-direct current bus, a 3-weak current line, a 4-main control board, a 5-industrial control computer, a 6-communication box, a 7-first watertight socket, a 8-second watertight socket, a 9-fixing tool, a 10-junction box, a 11-watertight cable, a 12-to-be-tested propulsion system, a 13-mounting base, a 14-pressure kettle, a 41-central processing unit, a 42-first communication module, a 43-second communication module, a 44-conversion module, a 45-alarm module and a 46-data storage module.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, e.g., the terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., refer to an orientation or position based on that shown in the drawings, are for convenience of description only and are not to be construed as limiting of the present disclosure.

The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the description of the above figures are intended to cover non-exclusive inclusions; the terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. In the description and claims of the present invention and in the description of the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, the invention provides a UUV propulsion system reliability autoclave test system, which comprises a power supply, an upper computer, a main control board 4, a first watertight socket 7, a mounting base 13, a junction box 10, a watertight cable 11 and an autoclave 14;

the pressure kettle 14 is internally provided with a mounting base 13 to provide a fixed space for the propulsion system 12 to be tested and the junction box 10, namely, the propulsion system 12 to be tested and the junction box 10 are arranged on the mounting base 13, and the propulsion system 12 to be tested and the junction box 10 are connected through a watertight cable 11. And a watertight plug is correspondingly arranged in a wire outlet hole reserved in the bulkhead of the pressure kettle 14, and a first watertight socket 7 connected with the junction box 10 is arranged on the watertight plug. The power supply and the main control board 4 are arranged outside the pressure kettle 14 and are respectively connected with the first watertight socket 7. The upper computer is arranged outside the pressure kettle and is connected with the main control board 4.

Further, the power supply adopts a direct current stabilized voltage power supply 1 and is connected to the first watertight socket 7 through a direct current bus 2, so as to provide power for the propulsion system 12 to be tested.

Specifically, after the direct current stabilized voltage power supply 1 performs electrical connection conversion through the direct current bus 2, the first watertight socket 7, the second watertight socket 8, the junction box 10 and the watertight cable 11, power is provided for the propulsion system 12 to be tested, voltage and current data of the direct current bus 2 are monitored, and the propulsion system 12 to be tested can work normally.

Furthermore, the upper computer adopts the industrial control computer 5 and is connected with the main control board 4 through the communication box 6, so that signal transmission is convenient. The main control board 4 is also connected to the first watertight socket 7 through the weak current dissipating wire 3.

In this embodiment, the industrial control computer 5 serves as an upper computer and sends a control instruction to the main control board 4 through the communication box 6. And the main control board 4 receives the control instruction, performs electrical wiring conversion through the first watertight socket 7, the second watertight socket 8, the junction box 10 and the watertight cable 11, and then sends the converted control instruction to the propulsion system 12 to be tested, so as to control the propulsion system 12 to be tested to work. Meanwhile, the main control board 4 receives operation data such as rotating speed, voltage, current and temperature fed back by the propulsion system 12 to be tested and fault signals such as water leakage, converts the water leakage fault signals, judges whether fault conditions such as water leakage exist or not, and gives an alarm when the water leakage fault conditions are determined to exist. The main control board 4 also stores the operation data and the fault data, and feeds other fault conditions back to the upper computer for display and monitoring.

Further, referring to fig. 2, the main control board 4 includes a central processing unit 41, a first communication module 42, a second communication module 43, a conversion module 44, an alarm module 45, and a data storage module 46; the second communication module 43 receives a control instruction of the upper computer and outputs the control instruction to the central processing unit 41;

the central processing unit 41 outputs the control instruction to the propulsion system 12 to be tested through the first communication module 42, and controls the propulsion system 12 to be tested to work. The central processing unit 41 further receives the operation data fed back by the propulsion system 12 to be tested through the first communication module 42, and outputs the operation data to the data storage module 46 for storage and uploads the operation data to the upper computer;

the conversion module 44 receives the water leakage fault signal output by the propulsion system 12 to be tested, converts the analog fault signal of the water leakage alarm outgoing line into a digital signal, and outputs the digital signal to the central processing unit 41; the cpu 41 determines whether a water leakage fault occurs according to the received signal, and outputs an alarm signal to the alarm module 45 to prompt an alarm when it is determined that the water leakage fault occurs.

The central processing unit 41 receives other fault conditions of the propulsion system 12 to be tested through the first communication module 42, and feeds the other fault conditions back to the upper computer through the second communication module 43, and the other fault conditions are displayed and monitored through the upper computer.

In this embodiment, the main control board 4 can select chips with communication functions such as a DSP, a single chip microcomputer, and an ARM, and is provided with devices such as an indicator light and a buzzer to alarm water leakage failure, so that the device is intuitive and convenient. Because the propulsion system 12 to be tested, such as some watertight motors, is limited by the structural space, the lead of the water leakage detection plate cannot be connected to the main control plate, or because of the requirement of the propulsion system, the water leakage fault signal is not judged and processed directly by the controller of the watertight motor, the water leakage fault signal needs to be converted by the conversion module 44 of the main control plate 4 during the test, and then the central processing unit 41 judges the water leakage fault signal and gives an alarm through the alarm module 45. And aiming at other non-water leakage fault conditions, the controller of the watertight motor directly judges and processes the fault conditions and outputs the fault conditions to the upper computer, and the upper computer feeds back the fault conditions according to the received other fault conditions, so that the propulsion system 12 to be tested is conveniently monitored and displayed, and the working reliability of the propulsion system to be tested is ensured.

In this embodiment, the main control board 4 has a simple structure and reliable functions, is convenient for data transmission, and can perform alarm prompt and fault feedback, thereby ensuring the reliability of the work of the propulsion system 12 to be tested, and further ensuring the reliability of the whole test system.

Furthermore, the junction box 10 is of a watertight structure, second watertight sockets 8 are mounted at two ends of the junction box, the second watertight socket 8 at one end is connected with a propulsion system 12 to be tested through a watertight cable 11, the second watertight socket 8 at the other end is connected with a first watertight socket 7 on a bulkhead of the pressure kettle 14 through the watertight cable 11, and is connected with an external debugging loose wire after being converted, and electrical matching wiring is performed inside the junction box 10.

Further, in order to ensure reliable installation, the propulsion system to be tested 12 and the junction box 10 are respectively arranged on the installation base 13 through the fixing tool 9.

In this embodiment, after the cover of the autoclave 14 is closed, water is filled, the water pressure in the autoclave 14 can be adjusted through manual operation, and the pressure in the autoclave 14 can be at least increased to 5MPa, so as to provide different water depth working conditions for the propulsion system 12 to be measured.

In this embodiment, after the basic test is performed on the watertight motor of the propulsion system 12 to be tested, and the airtightness of the propulsion system 12 to be tested and the junction box 10 is checked to be correct, the propulsion system 12 to be tested is placed in the pressure kettle 14 to perform the reliability test under different water pressures, and the water pressure is kept stable during the test process, so that the situation of severe fluctuation cannot occur.

Specifically, under different water pressures, the industrial control computer 5 sets the corresponding rotating speed of the propulsion system 12 to be tested, and monitors the running data such as the direct-current bus voltage and current displayed by the direct-current stabilized voltage supply 1 and the rotating speed received by the industrial control computer 5 after running, the actual rotating speed needs to be stable and meets the index requirement, the data such as the direct-current bus voltage and current do not fluctuate in a large range, and the industrial control computer 5 does not receive fault feedback such as water leakage, so that the system can be considered to run stably and reliably. Under different water pressures, the rotating speed of the to-be-tested propulsion system 12 is continuously switched (including forward and reverse switching) through the industrial control computer 5, the rotating speed response time of the to-be-tested propulsion system 12 is required to meet index requirements, and finally the system can stably and reliably operate.

Referring to fig. 2, the invention further provides a UUV propulsion system reliability autoclave test method, which comprises the following specific steps:

step S1: carrying out airtight inspection on the propulsion system 12 to be tested and the junction box 10, and placing the propulsion system 12 to be tested and the junction box 10 into the pressure kettle 14 for fixing;

step S2: and electrically connecting the whole system, namely electrically connecting the propulsion system 12 to be tested, the junction box 10 and the junction box 10 with the direct-current stabilized voltage power supply 1, the main control board 4 and the industrial control computer 5 respectively.

Specifically, the watertight cable 11 and the dc bus 2 are selected to be able to withstand the current of the propulsion system 12 under full load or even overload.

Step S3: after the system is powered on, the function of the propulsion system 12 to be tested is checked, and after the propulsion system 12 to be tested is judged to be normal through the feedback operation data received by the industrial control computer 5, the system is powered off and the pressure kettle 14 is closed.

Step S4: the pressure kettle 14 is filled with water, the power is turned on, different water pressures are applied to the pressure kettle 14 according to different working conditions, the industrial control computer 5 controls the running state of the propulsion system 12 to be tested, and the reliability of the propulsion system 12 to be tested is tested. Specifically, the selection can be carried out according to the actual operation condition, and a plurality of groups of different water pressures can be carried out.

Further, the reliability test specifically includes:

1. and electrifying, setting the low rotating speed of the propulsion system 14 to be detected to enable the propulsion system to operate, gradually and slowly increasing the water pressure in the pressure kettle 14, monitoring water leakage alarm information through the industrial control computer 5, and judging the propulsion system 12 to be detected to be normal and reliable if the propulsion system to be detected operates normally and stably in the whole process and the main control board 4 does not prompt abnormal conditions such as water leakage alarm and the like.

In this embodiment, if a water leakage alarm occurs during the pressurization process, the pressure should be released immediately and the water in the autoclave 14 should be discharged, possibly because the design, processing, material and other choices of the sealing structures such as dynamic sealing and the like need to be improved and can be optimized accordingly. The method is mainly used for verifying whether the sealing performance of the UUV propulsion system such as dynamic sealing of a watertight motor is reliable at the maximum working depth.

2. And electrifying, setting different rotating speeds in the rotating speed range of the propulsion system 12 to be tested to enable the propulsion system to be tested to operate, monitoring the operating condition of the propulsion system 12 to be tested through the industrial control computer 5 and the direct-current stabilized power supply 1, and if the propulsion system 12 to be tested normally and stably operates according to the set rotating speed, and the main control board 4 does not give an alarm prompt and the industrial control computer 5 does not receive fault feedback, judging the operation to be normal and reliable.

In this embodiment, if the propulsion system 9 to be tested has a condition that the rotation speed is not high, for example, the given rotation speed is 1600r/min, and the actual stable operation rotation speed is 1500r/min, it indicates that the actual output power of the propeller of the propulsion system 9 to be tested is larger than the design value, and the current threshold set in the watertight motor controller is smaller, so that the propeller can be optimized. The method is mainly used for verifying whether a theoretical value and an actual value of a propeller design are consistent, if the difference is large, not only can a watertight motor be optimized and adjusted, but also relevant equipment of a UUV propulsion system can be optimized and adjusted.

3. And electrifying, simulating the actual operation condition, and continuously switching the rotating speed of the propulsion system 12 to be tested under different water pressures, such as different modes of forward and reverse rotation switching, high and low speed switching, operation switching and stopping, and operation stopping and switching. In the switching process, if the voltage and the current of the direct current bus 2 monitored by the direct current stabilized voltage supply 1 do not fluctuate violently, the response time of the propulsion system 12 to be tested meets the requirement, and finally the propulsion system operates normally and stably according to the switched rotating speed, and the main control board 4 does not prompt an alarm and the industrial control computer 5 does not receive fault feedback, so that the propulsion system is considered to be normal and reliable.

In this embodiment, if the response time of the propulsion system 9 to be tested is slow, the switching rotation speed of the motor is jittered, and the like, the optimization can be performed by modifying the relevant parameters in the watertight motor controller. The method is mainly used for verifying whether the forward and reverse rotation switching and stepless speed regulation and other functions of the propulsion system 9 to be tested are reliable under the actual water depth working condition.

4. And electrifying, simulating the actual operation condition, controlling the propulsion system 12 to be tested to be continuously started and stopped under different water pressures, and if the response time of the propulsion system 9 to be tested meets the requirement and finally the propulsion system is normally and stably operated at the given rotating speed, and the main control board 4 does not give an alarm and the industrial control computer 5 does not receive fault feedback, judging the system to be normal and reliable.

In this embodiment, if the propulsion system 9 to be tested can be started or stopped normally under the low water pressure condition, but under the high water pressure condition, the response time of the propulsion system 9 to be tested is slow, and even the propulsion system cannot be started to reach the given rotating speed. The reason may be that the larger the water pressure is, the larger the compression amount of the O-shaped ring of the dynamic seal of the watertight motor becomes, and the larger the friction force between the O-shaped ring and the shaft becomes, so that the starting torque exceeds the starting capability of the watertight motor, and the corresponding structure of the dynamic seal of the watertight motor and the related parameters in the controller of the watertight motor can be optimized by changing. Specifically, the method mainly aims at a low-power watertight motor without a position control mode, and mainly aims at verifying the capability of the watertight motor to adapt to severe torque fluctuation under the actual water depth working condition without the position control mode.

The dynamic seal performance test device is used for dynamic seal performance verification of a watertight motor in an Underwater Unmanned Vehicle (UUV) propulsion system (generally composed of the watertight motor, a controller, a propeller, a guide pipe and the like) and operation performance test of simulating the underwater actual working condition of the UUV propulsion system, is suitable for reliability test of the UUV propulsion system, can ensure the underwater actual working environment of the UUV propulsion system, and can simulate the corresponding water depth working condition through a pressure kettle under a laboratory environment to complete the operation performance reliability test of the UUV propulsion system.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. The utility model provides a UUV propulsion system reliability autoclave test system which characterized in that: the test system comprises a power supply, an upper computer, a main control board, a first watertight socket, a junction box, a watertight cable, a mounting base and a pressure kettle;

a mounting base is arranged in the pressure kettle, a propulsion system to be tested and a junction box are arranged on the mounting base, and the propulsion system to be tested and the junction box are connected through watertight cables; a watertight plug is correspondingly arranged in a wire outlet hole reserved in the bulkhead of the pressure kettle, and a first watertight socket connected with the junction box is arranged on the watertight plug; the power supply, the main control board and the upper computer are positioned outside the pressure kettle;

the power supply provides power for the propulsion system to be tested; the upper computer sends a control instruction to the main control board; the main control board receives the control instruction and sends the control instruction to the propulsion system to be tested; the main control board also receives operation data and fault signals fed back by the propulsion system to be tested, stores the operation data and the fault signals and outputs the operation data and the fault signals to the upper computer, converts water leakage fault signals in the water leakage fault signals, and gives an alarm prompt after the water leakage fault is determined.

2. The UUV propulsion system reliability autoclave test system according to claim 1, wherein: the main control board comprises a central processing unit, a first communication module, a second communication module, a conversion module, an alarm module and a data storage module; the second communication module receives a control instruction of the upper computer and outputs the control instruction to the central processing unit;

the central processing unit outputs the control instruction to the propulsion system to be tested through the first communication module and receives operation data fed back by the propulsion system to be tested; the operating data is output to a data storage module for storage and uploaded to an upper computer;

the conversion module receives a water leakage fault signal output by the propulsion system to be tested, and converts and outputs the water leakage fault signal to the central processing unit; and the central processing unit outputs an alarm signal to the alarm module for alarm prompt when the water leakage fault is determined according to the received signal.

3. The UUV propulsion system reliability autoclave test system according to claim 2, wherein: the central processing unit receives other fault conditions output by the propulsion system to be tested through the first communication module, feeds the other fault conditions back to the upper computer through the second communication module, and displays and monitors the fault conditions through the upper computer.

4. The UUV propulsion system reliability autoclave test system according to claim 1, wherein: the power supply adopts a direct-current stabilized power supply and is connected to the first watertight socket through a direct-current bus; the upper computer adopts a computer controlled by a computer and is connected with the main control panel through a communication box; the main control board is also connected to the first watertight socket through weak current scattering wires.

5. The UUV propulsion system reliability autoclave test system according to claim 1, wherein: the junction box is of a watertight structure, second watertight sockets are mounted at two ends of the junction box, and the second watertight sockets are connected with the propulsion system to be tested and the first watertight socket through watertight cables respectively.

6. The UUV propulsion system reliability autoclave test system according to claim 1, wherein: and the propulsion system to be tested and the junction box are arranged on the mounting base through a fixing tool.

7. A test method based on the UUV propulsion system reliability autoclave test system of any one of claims 1 to 6, characterized by comprising the following steps: the test method comprises the following specific steps:

carrying out airtight inspection on the propulsion system to be tested and the junction box, and placing the propulsion system to be tested and the junction box into a pressure kettle for fixing;

respectively electrically connecting the propulsion system to be tested with the junction box, and electrically connecting the junction box with the direct-current stabilized voltage power supply, the main control board and the industrial control computer;

after the system is powered on, the function of the propulsion system to be tested is checked, and after the industrial control computer determines that the function of the propulsion system to be tested is normal according to the received operation data, the power is cut off and the pressure kettle is closed;

and (3) filling water into the pressure kettle, electrifying and applying different water pressures to the pressure kettle according to different working conditions, and controlling the running state of the propulsion system to be tested by the industrial control computer to test the reliability of the propulsion system to be tested.

8. The UUV propulsion system reliability autoclave test method of claim 7, wherein: the industrial control computer controls the running state of the propulsion system to be tested and tests the reliability of the propulsion system to be tested, and the method specifically comprises the following steps:

and controlling the propulsion system to be tested to run at different given rotating speeds, monitoring through the industrial control computer, the direct-current stabilized voltage power supply and the main control board, and judging the propulsion system to be tested to be reliable if the propulsion system to be tested normally runs at the given rotating speed.

9. The UUV propulsion system reliability autoclave test method of claim 7, wherein: industrial control computer control advancing system's the running state that awaits measuring to carry out the reliability test to advancing system that awaits measuring, specifically still include:

switching the rotating speed of the propulsion system to be tested under different water pressures, if the voltage and the current of the direct current bus are monitored to have no violent fluctuation, the response time of the propulsion system to be tested meets the requirement, the propulsion system to be tested normally and stably operates according to the switched rotating speed, and the main control board does not prompt an alarm and the industrial control computer does not receive fault feedback, so that the operation performance of the propulsion system to be tested is considered to be reliable;

and under different water pressures, controlling the propulsion system to be tested to be continuously started and stopped, and if the response time of the propulsion system to be tested meets the requirement and finally the propulsion system to be tested normally and stably operates at a given rotating speed, determining that the running performance of the propulsion system to be tested is reliable.

10. The UUV propulsion system reliability autoclave test method of claim 7, wherein: industrial control computer control advancing system's the running state that awaits measuring to carry out the reliability test to advancing system that awaits measuring, specifically still include:

and controlling the propulsion system to be tested to operate at a low rotating speed, gradually and slowly increasing the water pressure in the pressure kettle, monitoring water leakage alarm feedback by the industrial control computer, and if the propulsion system to be tested operates normally and the main control board does not prompt water leakage alarm, determining that the sealing performance of the propulsion system to be tested is reliable.

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